Negative Volume
Negative Volume
@negativevolume
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Joined: January 16, 2019 3:58 am
Last seen: October 10, 2026 3:34 pm
Topics: 14 / Replies: 661
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RE: Should I use Cylindrical Constrain ?How?

Hi @mass, I've never tried using a cylindrical constraint like you are mentioning. I'm not sure if you can apply a cylinder constraint to *Boundary...

5 years ago
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RE: Roll Forming Simulation Problem

Hi @driver_x, I'll need some more details about your simulation if I am going to be able to help. What is supposed to happen during your simulation...

5 years ago
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RE: Contact Penetration

@viky113 Is the foam nodally connected to the green curved bar? And is the bar rigid?

5 years ago
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RE: Contact type to choose for bird to parallel plate impact

Hi @paulvazz This example seems very similar and might help.

5 years ago
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RE: Contact Penetration

@viky113 try soft=2 and depth=5 and reset your contact stiffness back to default of 1.0. You are using *Contact_automatic_surface_to_surface I assume?...

5 years ago
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RE: Advice for entering a CAE field

@geardyn-1 Well yes, people still use PrePost. But I said not many people do in the automotive field. That was specific because they said that’s the f...

5 years ago
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RE: Advice for entering a CAE field

PrePost is great for learning LS-Dyna but not many people in the field use it. Most use Oasys Primer, and some use any combination of Hyperworks produ...

5 years ago
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RE: Advice for entering a CAE field

@ipetcatbutts This is a hilarious but true statement. @jp I would say it is entirely possible to get a job in the automotive field with just skills...

5 years ago
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RE: HELP Forrtl: severe (157): Program Exception - access violation.

Hi @tttthhhxx, Have you checked the existing topics here related to addressing that same issue? Looks like the usual suspects to cause this are: ...

5 years ago
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RE: quasi-static problem

@mahmoud why would explicit be any faster than implicit?

5 years ago
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RE: quasi-static problem

Hi @mahmoud, Any reason why you don’t want to use implicit? That’s the only way if you want true quasi-static over a reasonable amount of time. No...

5 years ago
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RE: Extracting nodal rotations in Ls-PrePost

@kingoz79 did the measure tool accomplish what you wanted?

5 years ago
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RE: Nodal rotations for solid elements

@kingoz79 you probably need to give the new shell part an appropriate section with a thickness (1mm is fine) and *Mat_rigid. Just use whatever materia...

5 years ago
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RE: Assigning orientation of Solid Elements

Hi @syed2468, If you just want to check/modify the element alignment in LS-PrePost you can use Element Tool -> Element Editing -> Align. You ...

5 years ago
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